Feed-water filter.



UNITED STATES atentea november 17, 1,903.

PATENT. OFFICE.

FEED-WATERFILTER.

sPEoIFIcATIoN forming partof Letters' Patent No. 744,459,01atea November 17, 1903.

lpfiimionnea Noventa: 24, 1902.- sen'n In. 132,555. or@ miem To a/ZZ whom it maycoz/werft:

Be it known that I, JAMES FRANOISIBAR- RETTa citizen of the United States, and a skilled mechanics', but especially applicable to the feed-water pipe of locomotives.

The prime object of the invention is to provide means by which sediment and other foreign matter will be prevented from entering the boiler and also by which this sediment and foreign matter may be ejected from the hose without requiring manipulation of the coupling. In attaining this end I provide a casing with a strainer therein, the casing be-l ing constructed in two parts which move relatively to open a vent through which the sediment may be discharged. Thisopening action is automatically brought i about by steam -pressurefrom the injector or other source, so that by simply manipulating the injector the hose from the tank may be cleared of obstructions and the feed-water ldrawn steadily through the pipe. v.

This specification is an exact description of one example of my invention, while the claim define the actual scope thereof;

Reference is to be had to the accompanying drawings, form ing a part of this specification, in which similar characters of, reference indicate corresponding parts in alll the views.

Figure 1 is a side elevation of a locomotivecab and adjacent parts, illustrating the application of my invention. Fig. 2 is an enlarged section of the invention, showing itin closed position. Fig. 3 is a similar view showing the invention open to discharge ,Y the sediment.

Fig. 4 is a section on the line 4 4of Fig. 3,

sections of the hose connecting the water-tankV and the injector.

My invention consists in a coupling which.

is placed between the hose-section 12 and feed-pipe 14 and which embodies a strainer `andalso is capable of automatically opening underthe action of steam-pressure, so that the foreign matter collected at the strainer may be blown out of the hose and lter.

Thejinvention comprises a main or body section 15, which'as here shown'is connected tothe feed-pipe 14at its end16. :(SeefFigs.

2and 3.) This lmain orbody'section 15 of the easing isfhollow, as shown, and has the reduced portion-'17 of the coupling-section 18 fitted to slide therein, said section 18 having an annular shoulder 18, normally engaging the inner end of the section 15, so as to form a water-tight connection. The reduced end 17 -of the casing-section 18 has an opening 19 formed therein, and when the parts are in the position shown in Fig. 2 this opening is covered by the section 15. When, however, the sections l5 and 18 are separated, as in Fig. 3, the port or opening 19 is uncovered and the material inthe casing-section 18 is free to pass out. The sections 15 and 18 may be held yieldingly in closed position, as in Fig. 2, by any desired spring devices. I prefer to employ the construction shown in Fig. 2, which is to' say lugs 20 and 2l are formed, respectively, on

-the sections 15 and 18, and to the lug 20 is fastened a headed rod or bolt 22, carrying a spring'23, which bears between the head of the bolt and lug 21. These springs hold the parts 15 and 18 in closed position; Nbut when .the pressure of the springs is overcome said .parts or sections may be moved apart to un- .cover the opening 19. As here shown, four of the springs 23 and their appurtenant parts are provided. This insuresan equal pressure holding the sections of the casing engaged. v i

Projected inward of the reduced portion 17 ably four) of fingers 24, which slide on the inner surface of the section 15 and guide the two sections in their relative movement, preventing said sections from wabbling the one Von the other when they are drawn out, as in Fig. 3.

Fastened in the. end of the reduced of the casing-section 18 are anumber (preferpin 2S to assume the closed position shown in Fig. 3 or the open position illustrated in Fig. 2. Said clack-valve 27 is provided with a steain-vent orifice 29.

lVhen the injector is working and a current of water is drawn through the hose in the direction of the arrow shown in Fig. 2, the strainer 25 will stop foreign matter passing through the pipe, and the valve 27 will be thrown into the position shown, which allows the unobstructed passage of the water. IIowever, should the sieve become clogged the inj ector maybe manipulated to cause a pressure of steam to pass through the main liose-section 14 and into the casing-section 15. This will instantly seat the valve 27, and the steampressure acting on the face of this valve will then overcome the action of the springs 23 and force the section 18 of the casing out into the position shown in Fig. 3, thus uncovering the opening 1f). Simultaneously a relatively small volume of steam will find its way through the port 29 and spread through the sieve 25, thus blowing the sediment off from the sieve and causing it to run with the water out through the opening 19, as indicated in Fig. 3. lVhen this operation has been allowed to go on for a sufficient length of time, the steam-pressure should be cut off from the pipe-section 14, and then the springs 23 will act automatically to return the parts to the closed position, whereupon by operating the injector the water will fiow unobstructedly through the strainer and into the injector. In order to support the filter in proper position, I prefer to employ a han ger-rod 30, which is supported from'the frame or cross-tie of the engine and is joined to slug 31, formed on top of the section 15 of the casing.

Various changes in the form, proportions, and minor details of the invention may be resorted to at will without departing from the spirit and scope thereof. Hence I consider myself entitled to all such variations as may lie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A filter comprising two relatively movable sections, and means for yieldingly holding them in closed position, said sections being movable against said yielding means to open the filter to allow the sediment to pass out.

2. A filter comprising two sections having limited movement relatively to each other to open and close the filter, and means yieldingly holding said sections in closed position.

3. A filter comprising two relatively movable sections, means for yieldingly holding them in closed position, said sections being movable against said yielding means to open the filter, and a strainer placed in the filter.

4.. A filter, comprising two sections having limited movement relatively to each other to open and close the filter, means yieldingly tions in closed position, and a strainer carried by the filter.

6. In a filter, the combination of two scctions relatively movable for the purpose specified, means for yieldingly holding said sections in closed position, a strainer carried by the filter, and a valve commanding the filter, said valve having a vent therein. 7. In a filter, the combination ofr two sections relatively slidable for the purpose specified, means for yieldingly holding the sections in closed position, a sieve carried by one section, and a valve carried by said section and having a vent therein. p

8. In a filter, the combination of two relatively slidable sections fitted one within the other, one of said sections having a dischargeorifice therein, and said orifice being normally closed by the other section, means for yieldingly holding the filter in closed position, and a valve mounted'on one section and opening in one direction only.

9. In a filter, the combination of two relatively slidable sections fitted one within the other, one of said sections having a dischargeorifice therein and said orifice being normally closed by the other section, means for yieldingly holding the filter in closed position, a valve mounted on one section and opening in one direction only, the valve having avent therein, and a sieve carried by the section carrying the valve.

10. In a filter, the combination of two relatively slidablefsections fitted one within the other, one of said sections having a dischargeorifice therein and said orifice being normally closed by the other section, means for yieldingly holding the filter in closed position, a valve mounted on one section and opening in one direction only, and a sieve or strainer placed in the filter.

11. A filter, comprising two members relatively movable to open and close the filter, and a sieve carried within the filter.

12. A filter, comprising two members relatively niovable to open and close the filter, a sieve carried within the filter, and a valve also carried within the filter and having a vent therein, said sieve and valve being cai'- ried by the same member of the filter.

13. In a filter, two relatively movable sections yieldinglylield in a closed`position and adapted to be opened by fluid-pressure to permit of the discharge of sediment therefrom.

14. In a filter, two relatively movable and yieldingly-held sections, and a valve carried by one of the sections and adapted to be acted upon by fluid-pressure to open the sections to permit the discharge of sediment.

15. In a filter, a fixed section, a slidable IOO IIO

section, means for yieldingly holding the seoname to thisspeeieation 'in the presence of tions in` a closed position, and Valve carried two subscribing Witnesses.

by the movable section and adapted to be acted upon by fluid-pressure to move the JAMES FRANCIS BARRETT' 5 movable section outward to permit the dis- Witnesses:

charge of sediment. B. B. GODWIN,

' In testimony whereof I have signed my l W. H. BRONSON. 

